This is how you setup analog delay pedal

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Disclaimer:
Stop being "I do it by ear" guru (incompetent moron), and do it properly. You need an oscilloscope and signal generator.

Setup maximum delay time:

In this example V3205 has maximum delay time of 204,8ms. This can be achieved with 10kHz clock signal. And like all BBD devices, lower frequency = longer delay time. Also with all BBD delays there is a trade-off between delay length and sound quality. For example Boss DM-2 uses 6,8kHz to get 300ms for MN3005. Experiment.

Adjust for minimum distortion:

This is very important step. Feed 200Hz 1 Vrms (about 2,85 Vpp) sine wave test signal to pedal input. Output is often measured after the expander, usually on input side of level or repeats (or echo or intensity etc.) potentiometer. Observe the wave shape on oscilloscope and adjust bias trimmer for clean sine wave output. This is very sensitive adjustment.

Setting up BBD balance:

With no input signal, observe the waveforms on balance trimmer wiper. Converge these two signals as best as you can. This signal is often a bit noisy and messy.

That's it! 😊